ZIP code 01731: Hanscom AFB, MA
ZIP code 01731 is in Hanscom AFB (97% of residents) and Lexington (1.2%), in Middlesex County, Massachusetts. It is in Massachusetts's 5th congressional district (93%) and Massachusetts's 6th congressional district (6.6%). Its state senate district is Third Middlesex District; its state house districts are 14th Norfolk District (92%), 21st Middlesex District (6.6%) and 15th Middlesex District (1.2%).
See it on the mapAll of Massachusetts
City and county
| City or town | Share of ZIP residents |
|---|---|
| Hanscom AFB | 97% |
| Lexington | 1.2% |
| County | Share of ZIP residents |
|---|---|
| Middlesex County | 100% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Lincoln town | 92% |
| Bedford town | 6.6% |
| Lexington town | 1.2% |
| Concord town | land only |
Congressional districts
| Congressional district | Share of ZIP residents |
|---|---|
| Massachusetts's 5th congressional district (MA-05) | 93% |
| Massachusetts's 6th congressional district (MA-06) | 6.6% |
| Massachusetts's 3rd congressional district (MA-03) | land only |
This ZIP is split between districts. A mailing address in it could be in either; the map or locate_point gives the district for an exact address.
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| U.S. Representative (MA-05) | Katherine M. Clark (D) | 202-225-2836 | 93% |
| U.S. Representative (MA-06) | Seth Moulton (D) | 202-225-8020 | 6.6% |
| U.S. Representative (MA-03) | Lori Trahan (D) | 202-225-3411 | <0.1% |
| U.S. Senator | Edward J. Markey (D) | 202-224-2742 · contact form | statewide |
| U.S. Senator | Elizabeth Warren (D) | 202-224-4543 · contact form | statewide |
| State Senator (Third Middlesex District) | Mike Barrett (Democratic) | 100% | |
| State Representative (14th Norfolk District) | Alice Peisch (Democratic) | 92% | |
| State Representative (21st Middlesex District) | Ken Gordon (Democratic) | 6.6% | |
| State Representative (15th Middlesex District) | Michelle Ciccolo (Democratic) | 1.2% | |
| State Representative (13th Middlesex District) | Carmine Gentile (Democratic) | <0.1% |
Officials serving now (members of Congress until January 3, 2027). Sources: State legislators: Open States (public domain); Members of Congress: the @unitedstates project, congress-legislators (CC0).
Local government
- Hanscom AFB website: https://www.hanscom.af.mil/
- Hanscom AFB laws: search for the Hanscom AFB, Massachusetts code of ordinances
- Lexington laws: search for the Lexington, Massachusetts code of ordinances
- Middlesex County laws: search for the Middlesex County, Massachusetts code of ordinances
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| Third Middlesex District | 100% |
| State house district | Share of ZIP residents |
|---|---|
| 14th Norfolk District | 92% |
| 21st Middlesex District | 6.6% |
| 15th Middlesex District | 1.2% |
| 13th Middlesex District | land only |
Voting precincts
5 voting precincts overlap ZIP 01731. Map them, with each precinct's share of the ZIP's residents.
Get this in your AI agent
Your agent can get these cities, counties, districts and precincts with their shares, and their GeoJSON boundaries, from Boundary Atlas. Add https://atlas-production-d344.up.railway.app/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:
related_geographies(id="us:zcta:01731")
ZIP 01731 here is the Census Bureau's ZIP Code Tabulation Area, which approximates the USPS ZIP Code; PO-box-only ZIPs have none. Districts are the maps in force for the November 3, 2026 election.